flist.h

#ifndef foopulseflisthfoo#define foopulseflisthfoo/*** This file is part of PulseAudio. Copyright 2006-2008 Lennart Poettering PulseAudio is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. PulseAudio is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with PulseAudio; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.***/#include <pulse/def.h>#include <pulse/gccmacro.h>#include <pulsecore/once.h>#include <pulsecore/core-util.h>/* A multiple-reader multipler-write lock-free free list implementation */typedefstruct pa_flist pa_flist;
/* Size is required to be a power of two, or 0 for the default size */
pa_flist * pa_flist_new(unsigned size);
void pa_flist_free(pa_flist *l, pa_free_cb_t free_cb);
/* Please note that this routine might fail! */int pa_flist_push(pa_flist*l, void *p);
void* pa_flist_pop(pa_flist*l);
/* Please not that the destructor stuff is not really necesary, we do * this just to make valgrind output more useful. */#define PA_STATIC_FLIST_DECLARE(name, size, free_cb) \ static struct { \ pa_flist *flist; \ pa_once once; \ } name##_flist = { NULL, PA_ONCE_INIT }; \ static void name##_flist_init(void) { \ name##_flist.flist = pa_flist_new(size); \ } \ static inline pa_flist* name##_flist_get(void) { \ pa_run_once(&name##_flist.once, name##_flist_init); \ return name##_flist.flist; \ } \ static void name##_flist_destructor(void) PA_GCC_DESTRUCTOR; \ static void name##_flist_destructor(void) { \ if (!pa_in_valgrind()) \ return; \ if (name##_flist.flist) \ pa_flist_free(name##_flist.flist, (free_cb)); \ } \ struct __stupid_useless_struct_to_allow_trailing_semicolon#define PA_STATIC_FLIST_GET(name) (name##_flist_get())#endif